1063 results about "Dry mixing" patented technology

A polymer composition of low gas permeability. The composition includes an exfoliated organically-modified clay, butyl rubber, and a polymeric exfoliant. A method for producing the butyl composition by dry mixing the butyl rubber with the exfoliated clay is also provided.

The invention relates to a high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint which is prepared from the following raw materials in parts by weight: 450-500 parts of epoxy resin, 50-100 parts of curing agent, 50-100 parts of conductive pigment, 200-250 parts of conductive filler and 30-50 parts of assistant. The preparation method of the high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint comprises the following steps: adding the materials into a high-speed mixer; after carrying out dry mixing, adding the mixture into an extruder, and melting, mixing, cooling and pelleting at the extrusion temperature of 80-90 DEG C; and pulverizing with a pulverizer, grading, screening and packaging to obtain the finished powder paint product. The invention has the characteristic of high electric conductivity, has an absorption action on certain electromagnetic waves, can be used as a preferred coating for electromagnetic shielding, and is applied to thefields of frequency converter shells, micro-current and light-current component shells and the like. In addition, the invention has excellent anticorrosion property and favorable electric conductivity (105 ohm), and the conducting power is almost approximate to that of a metallic conductor; and thus, the high-electric-conductivity heavy-anticorrosion wave-absorbing powder paint is an ideal antistatic coating, and can ensure safety in the aspects of fire resistance and explosion resistance.

The invention discloses architectural ceramic prepared from industrial solid waste through a dry method and a process for preparing the architectural ceramic. The architectural ceramic comprises the following components in percentage by mass: 30-60% of solid waste, 40-70% of ceramic raw material and 1-3% of ceramic additive, wherein the ceramic raw material is selected from one or a composition of multiple of clay raw material, feldspar raw material or talc, and the ceramic additive is one or a combination of multiple of sodium tripolyphosphate, sodium silicate, ammonium chloride, ammonium citrate, sodium humate, sodium lignin sulfonate sodium, ethylenediamine tetraacetic acid disodium and edetic acid. After being pretreated, the granules of the solid waste are fine and are mixed evenly in a dry mixing manner and a spray drying manner and are directly used for pressing of green bricks or stored in a bin for standby, so that the ball milling energy consumption and the peptization cost are reduced, the humidification pelleting and fluidized bed drying procedures are omitted, the formula can be quickly adjusted according to the functional characteristics of the architectural ceramic, the process is simple and convenient to control, and the architectural ceramic has such good properties as heat preservation, thermal insulation and high strength.

The invention discloses a modified polylactic acid fiber and a preparation method thereof. The modified polylactic acid fiber is prepared through blending polylactic acid, a cellulose derivative, a cellulose diacetate grafted polylactic acid copolymer, a lubricant, inorganic nanoparticles, a nucleating agent and an antioxidant. The preparation method comprises the following steps: adding partial polylactic acid slices and all other raw materials to a high speed mixer according to a mass component ratio, carrying out high speed dispersion, and carrying out melt blending and extrusion through a double screw extruder to obtain modified polylactic acid master batch slices; and carrying out dry mixing of the modified polylactic acid master batch slices and residual polylactic acid slices in the high speed mixer, carrying out melt spinning through a melt spinning machine, and stretching to obtain the modified polylactic acid fiber. The prepared polylactic acid fiber has the advantages of low cost, complete biodegradation, environmental protection, good spinning performance, stable filament bundle quality, excellent flexibility, excellent antifriction, excellent dyeing property and excellent comfortableness, and is a very good high-performance environmentally-friendly fiber material. The preparation method has the advantages of simplicity, low equipment requirement, and environmental protection in the production process, and is in favor of the industrialized production.

The invention discloses a krill oil microcapsual powder and its preparation method. The preparation method comprises steps of: preparation of an oil phase solution and an aqueous phase solution, mixing and emulsification of the two solutions, homogenizing, drying and the like. The krill oil microcapsual powder is prepared from the following raw materials of: by weight, 0.001-90% of krill oil, 0.5-90% of sodium caseinate and 0-99% of a filler. In addition, 0.001-10 wt% of an oil phase antioxidant, 0.001-5 wt% of an aqueous phase antioxidant, 0.001-5 wt% of an aqueous stabilizer and 0.001-5 wt% of an anti-caking agent can also be added. The krill oil microcapsual powder has high content of the encapsuled krill oil and has good stability and fluidity. After rehydration, krill oil can be dispersed into water completely in the form of particles (nm); and krill oil is stable if stored for a long time, and has no phenomenon such as floating oil, precipitation, adhesion to bottles and the like. therefore, the application range of krill oil is broadened, and krill oil is applied to fields such as dry mixing, drinks, dairy products, bakery, tablets and the like.

The invention provides a preparation method of slurry for an electrode of a supercapacitor, the electrode of the supercapacitor and a preparation method of the electrode of the supercapacitor. A eight-stage slurry preparation process is adopted in the preparation method of the slurry, and the preparation method of the slurry comprises the following steps of: I, dry mixing; II, wet mixing; III, lumping; IV, rubber mixing; V, roasting; VI, pelleting; VII, smashing; and VIII, slurry forming. The preparation method of the slurry can be used for increasing the solid content of the slurry, reducing the using amount of an adhesive, improving the dispersing effect of the slurry, realizing the quantitative control for the slurry preparation process and achieving better process stability and consistency. The electrode prepared by using the slurry has the advantages that the strength of the electrode is enhanced, the internal resistance of the electrode is reduced, the electrochemical stability and the structural stability of the electrode are improved, the reliability of the supercapacitor with the electrode is improved, and the service life of the supercapacitor is prolonged.

The invention discloses a mixed casting molding sand and a preparation method thereof. The preparation method mainly comprises: performing dry mixing of component raw materials including quartz sand, attapulgite, wax, asbestos, a furan resin, a phenolic resin, bentonite and potassium dichromate by certain weight parts; and adding water, mixing, placing sand, molding, casting, cooling and separating to obtain finished product. The preparation method of the invention is simple, the formula is reasonable, the cost is low, the production efficiency is high, the surface of an aluminum sand piece is made smooth by strictly controlling the particle size of quartz sand, and the breathability is high.

The present invention is generally directed to methods for preparing stable gabapentin tablets by wet granulation. A wet granulation method for preparing gabapentin tablets includes forming a mixture by dry mixing of a first portion of a binder with the gabapentin, one or more excipients, or a combination of the gabapentin and the one or more excipients; and adding a second portion of the binder to the mixture, wherein the second portion of the binder is in the form of a solution or dispersion.

The invention discloses a high-modulus and ultrahigh-impact polypropylene composite material and its preparation method. The composite material comprises 40-74wt% of polypropylene, 10-30wt% of an ultrafine inorganic filler, 15-30wt% of an elastomer flexibilizer, 0.1-2wt% of a stabilizer, and 0-5wt% of other additives. The preparation method comprises the following steps: carrying out dry mixing on raw materials in a high speed mixer for 3-15min, adding the mixed raw materials into a double screw extruder, carrying out melt extrusion, and carrying out cooling granulation. The preparation method has the following advantages:1, a ethylene-butylene copolymer is used as the elastomer flexibilizer, so the polypropylene composite material has better low temperature toughness than traditional toughening modified polypropylene; 2, ultrafine talcum powder is used as the inorganic filler, so the toughness loss can be reduced as much as possible, and the rigidness of the material is greatly improved; and 3, the synergistic effect of the ultrafine talcum powder and the elastomer flexibilizer is utilized, so the polypropylene composite material has more ideal rigidness-toughness balance than the traditional toughening modified polypropylene.

The invention relates to an efficient anti-pollution isolation liquid for well cementation and a preparation method thereof, belonging to the technical field of well cementation. The isolation liquid comprises the following components in parts by weight: 100 parts of clear water, 4-29 parts of suspending stabilizer, 0.5-5 parts of fluid loss additive, 0.3-2 parts of tackifier, 0.1-5 parts of diluting agent, 0-5 parts of viscosity and shearing force increasing agent, 30-350 parts of weighting agent, 1-25 parts of pH value regulating agent and 0.1-0.5 part of defoamer. The isolation liquid provided by the invention has wide density regulation range, large temperature resisting range, strong anti-pollution capacity, wide applicability and strong maneuverability, can be conveniently subjected to in-situ preparation, can be prepared by using a mud tank equipment base fluid method or cement vehicle equipment dry-mixing method, and can apply effective abrasion, scraping and carrying effects to attachments on an interface of a well wall; and by using the isolation liquid, the problems that in the well cementation operation, pollution is generated by fluid displacement, the adhering quality of a well cementation interface is poor and the like are effectively solved.

The invention relates to a wet-dry mixing electric dust remover. The electric dust remover mainly consists of an inlet smoke box, an air flow uniformly-distributing plate, a shell, a cathode line, an anode plate, an outlet smoke box, an outlet trough-shape plate, a rapping device, an ash bucket, a water distribution device and a water tank. The electric dust remover is characterized in that the upstream in the inflow direction of the smoke gas or the exhaust gas is provided with a dry-type ash removal electric field which adopts mechanical rapping, electromagnetic rapping or acoustic wave to remove the ash, the last electric field is a wet-type ash removal electric field which adopts a water film to remove the ash, the dry-type ash removal electric field and the wet-type ash removal electric field are arranged in the same shell, and the wet-type ash removal electric field is connected with an ash removal water treatment recycling system. The invention integrates the advantages of the dry-type electric dust removal and the wet-type electric dust removal, efficiently removes dust, ensures emission standards and minimizes the corrosion protection investment caused by the wet-type ash removal, the water treatment equipment investment and the running cost.

The invention discloses a monolithic cellular catalyst for SCR smoke denitration, which adopts TiO2 powder as a substrate. The catalyst is added with active ingredients and additive at the same time. The active ingredients comprise TiO2, WO3, MoO3, V2O5, ZrO2 and MnO2. The additive comprises water reducer, binder, pore-forming agent, extrusion assistant and glass fiber. The invention further discloses a preparation technology for the monolithic cellular catalyst for SCR smoke denitration, comprising the following steps: dry mixing, kneading and pugging to obtain a mud section with good plasticity and a compact structure; extruding to obtain the blank of the monolithic cellular catalyst; drying and baking to obtain the monolithic cellular catalyst for SCR smoke denitration. The invention has simple preparation technology, greatly reduces the water quantity during the kneading process through adding the water reducer which is adopted as one active ingredient, reduces the maintaining conditions of the catalyst after being formed, and improves the strength, abrasion resistance and yield for forming the catalyst.

The invention relates to a graphite-paraffin composite phase-changing and energy-storing concrete and a preparation method thereof. In the phase-changing and energy-storing concrete, cement, water, sand, gravels and a water reducer are used as substrates, and paraffin phase-changing materials, graphite with enhanced heat conducting function, and fiber reinforced materials with enhanced mechanical strength are also comprised. The preparation method comprise the steps of: firstly, mixing the paraffin and the graphite, heating until the paraffin totally melts, and continuously stirring to uniformly mix the paraffin and the graphite into a viscous form; putting the sand and the gravels into a stirrer, then putting fibers and the cement, carrying out dry mixing, adding the water and the water reducer subsequently, and rapidly stirring to reach a uniform state; and then putting the molten paraffin-graphite viscose mixture into the obtained concrete mixture, and uniformly mixing. Because the graphite is added into the paraffin to be used as an additive, the coefficient of heat conductivity of the phase-changing and energy-storing concrete is greatly enhanced, so that the heat storing and releasing efficiency of an energy-storing material is enhanced.

The invention belongs to the technical field of water treatment, and in particular relates to a catalytic ozonation catalyst for the wastewater treatment and a preparation method thereof. The catalyst is prepared from an active component, an auxiliary and a carrier, wherein the active component is a transition metal oxide, the auxiliary is an alkali metal oxide, an alkaline earth metal oxide or a lanthanide metal oxide, and the carrier is an aluminum oxide, active carbon or ceramsite. The invention further provides a preparation method of the catalyst. The preparation method comprises the steps: loading the active component, the auxiliary and a dispersing agent on the carrier by utilizing an impregnation method or a dry mixing method, curing, drying and roasting, thereby obtaining the catalyst. According to the catalytic ozonation catalyst for the wastewater treatment and the preparation method thereof, the COD removal rate is higher, and the service life is longer; the preparation process is simple, the costs are low, no secondary pollution exists, and the catalytic ozonation catalyst for the wastewater treatment and the preparation method thereof are very suitable for industrial production.

The invention relates to the field of non-metallic materials for metallurgical engineering, in particular to airtight electrode paste used for a large-scale submerged arc furnace and a manufacturing method of the airtight electrode paste. The airtight electrode paste uses carbon raw materials as aggregate, uses organic compounds as binding agents, and is manufactured through the working procedures of smashing, screening, powder grinding, material mixing, melting of the binding agents, dry mixing, wet mixing, past pulling formation and the like. The airtight electrode paste and the manufacturing method of the airtight electrode paste have the advantages that when the airtight electrode paste is used on the submerged arc furnace, electrode breaking accidents do not happen easily, the manufactured airtight electrode paste is manufactured by recycling waste materials and lowers production cost, the strength of the electrode paste is improved, the specific resistance of the electrode paste is lowered, and the thermal shock resistance when the electrode paste is sintered into a self-baking electrode is improved. Through the process method of the airtight electrode paste, particle classification levels are increased, material distribution is more reasonable and more stable through detailed classification, the temperature of each working procedure point is strictly controlled, and anthracene oil is heated so that the quality of products can keep stable.

The invention relates to a hard surfacing sintered flux and a manufacturing method thereof. The sintered flux comprises MgO of 30 percent to 50 precent, CaO of 2 percent to 10 percent, Al2O3 of 10 percent to 20 percent, CaF2 of 18 percent to 28 percent, SiO2 of 10 percent to 20 percent, SiC of 0 percent to 1.5 percent and other components of 0 percent to 5 percent such as ferroalloy mainly playing a role of desoxidation and the like. Material preparation, dry mixing and wet mixing by adding soluble glass into a blender are conducted until granules which have the required sizes are formed, then the granules are dried in a rotary drying way at the low temperature of 200 DEG C to 250 DEG C, and then finished products are obtained by high-temperature sintering in a rotary drying oven at the high temperature of 700 DEG C to 750 DEG C, sieving and packaging. The invention has low flux cost so as to meet the requirements of different hardness, excellent technique and good high-temperature slag detachability; the deposited metal has no gas hole, no crackle but adjustable hardness; and the high-temperature wear-resistance, oxide etch resistance and cold and thermal fatigue resistance of a hot roll are greatly improved.

The invention discloses a method for producing novel infant formula milk powder, which comprises: producing vegetable fat powder by a wet-method process; and dry-mixing the vegetable fat powder with other main ingredients, auxiliary ingredients and bioactive materials by using a dry-method process to prepared the infant formula milk powder for infant of different ages. The method has the advantages that: the dry-method process and the wet-method process are combined, the vegetable fat powder is produced by the wet-method process and then the vegetable fat powder is dry-mixed with other main ingredients, auxiliary ingredients and bioactive materials to prepare the infant formula milk powder for infant of different ages, so the investments in milk source construction, equipment, site construction and the like are reduced; high-quality whole milk powder can be directly purchased in China or from foreign countries; and energy conservation, emission reduction, production enlargement and production plan optimization can be realized, and the method has a great instructive significance for improving product nutritional value and the like.

The invention relates to a weather-resistant heavy-duty anticorrosive powder coating comprising the raw materials in parts by weight: 450-500 parts of hydrogenated bisphenol A epoxy resins, 50-99 parts of curing agents, 0.5-1 part of catalysts, 50-100 parts of zinc-rich fillers, 10-20 parts of self-repairing conductive macromolecule compounds, 190-240 parts of weather-resistant pigments and fillers and 30-50 parts of additives. A preparation method of the coating comprises the steps of putting the raw materials into a high-speed mixer, putting in an extruder after subjecting to dry mixing, carrying out fusion, mixing, cooling and preforming at an extrusion temperature of 80-90 DEG C, grinding by utilizing a grinder, grading, sieving and packaging to obtain finished products of the powder coating. The powder coating disclosed by the invention is mainly applied in the coating of outdoor heavy-duty anticorrosive environments, has excellent anticorrosive performance and weather-resistant performance and is an ideal heavy-duty anticorrosive coating capable of being used for outdoors. Proved by customer use and detection of relevant authoritative departments, the anticorrosive performance and the weather-resistant performance of the coating are excellent and can be completely up to indexes of imported similar products and certain indexes even exceed those of foreign products; the price of the coating is superior than that of the imported products; and therefore, the coating is well received by customers.

The invention particularly relates to an Al2O3-SiC-C iron runner casting material and a preparation method thereof. The technical scheme is as follows: the preparation method comprises the following steps: carrying out uniform dry mixing on raw materials 50-60 wt% of electrofused brown corundum granules, 8-12 wt% of electrofused brown corundum fine powder, 3-10 wt% of silicon carbide granules, 6-11 wt% of silicon carbide fine powder, 3-7 wt% of alpha-Al2O3 micropowder, 2-4 wt% of pelleted pitch, 2-4 wt% of silicon dioxide micropowder, 2-4 wt% of calcium aluminate cement, 2-4 wt% of metal antioxidant and 0.1-0.3 wt% of dispersant together with catalyst accounting for 0.1-3 wt% of the raw materials to obtain the Al2O3-SiC-C iron runner casting material. The invention has the advantage of low preparation cost; and the prepared Al2O3-SiC-C iron runner casting material has the advantages of low water addition amount, high flow value, favorable high-temperature service performance and high thermal shock stability, and so that the blast furnace iron runner has high iron flux and low refractory material consumption.

The invention discloses a preparation method of stable slurry of a lithium ion battery. The preparation method comprises the steps of: preparing mixed material and glue from an active substance, a conductive agent, a bonding agent, a dispersing agent, a solvent and other additives by a few steps of dry mixing, wet mixing and glue preparation, and then subjecting the mixed material and the glue to wet mixing by a stirrer to obtain mixed slurry, and further comprises the steps of: (1) dispersing the mixed slurry for 10 to 20 minutes by a high speed dispersing machine of 15 to 50m/s, and storing the slurry in a storage tank upon the completion of the dispersion; (2) returning the slurry in the storage tank to the stirrer and then dispersing the slurry for 10 to 20 minutes by the high speed dispersing machine according to the step (1); (3) circularly repeating the step (1) and the step (2) 2 to 5 times; and (4) after the dispersion is completed, performing defoaming, filtration and iron impurity removal on the slurry based on the prior art to obtain the finished product. The slurry in the invention is homogeneous in dispersion and can be stable for a long time; and compared with the traditional way that the stirrer is used to stir for a quite long time, the method can shorten the time for slurry preparation greatly and is favorable for automatic continuous production.

The invention discloses a middle and low temperature SCR denitration catalyst with an anti-poisoning performance. The invention also discloses a preparation method of the middle and low temperature SCR denitration catalyst with an anti-poisoning performance. The preparation method comprises the following steps: 1, calcining a transition metal salt at 400-700DEG C for 1-10h to obtain a transition metal oxide; 2, mixing heteropoly acid or heteropoly salt with the prepared transition metal oxide according to a mass ratio of 1:(0.1-1), and carrying out dry mixing grinding to obtain an intermediate, wherein the heteropoly acid is phosphotungstic acid or phosphomolybdic acid, and the heteropoly salt is corresponding B salt of phosphotungstic acid or phosphomolybdic acid; and 3, calcining the intermediate obtained in step 2 at 80-500DEG C to obtain a finished product. The catalyst has an excellent middle and low temperature denitration performance, has a very excellent anti-poisoning ability on SO2, alkali metals and alkaline earth metals, and has unique advantages in the treatment of exhaust gases with high content of the alkali metals or alkaline earth metals, comprising cement kiln tail gas, biomass fuel boiler flue gas and the like.

The invention relates to a normal temperature methane high-efficiency adsorption material and a preparation method thereof. The material is characterized in that a metal organic skeleton composite material containing transition metals Fe III, Zn II, Cu II, Ni II and Co III grows on an active carbon ceramic mainly prepared from active carbon and molecular sieve in an in situ manner. The preparation method of the normal temperature methane high-efficiency adsorption material comprises the following steps: carrying out dry mixing and ball milling on one or more of chlorides and sulfates of Fe<3+>, Zn<2+>, Cu<2+>, Ni<2+> and Co<3+>, high-specific surface area coconut shell active carbon, Y molecular sieve, attapulgite, kaolin and methyl cellulose in proportion, adding a certain amount of water, carrying out wet mixing, kneading, carrying out vacuum pugging, ageing, carrying out extrusion molding, drying in the shade, carrying out microwave irradiation sizing to obtain an active carbon ceramic molding material containing transition metals, immersing the molding material in a mixed solution containing an organic solvent, an deprotonated alkali and an organic carboxylic acid ligand according to a certain ratio, reacting at 120-180DEG C for 6-24h, carrying out solid-liquid separation, washing, and carrying out microwave vacuum drying to obtain a metal organic skeleton-active carbon ceramic composite material. The material has the characteristics of large specific surface area, developed aperture, high compressive strength, large methane adsorption capacity and high CH4/N2 and CH4/CO2 separation coefficients, and can be widely used in the fields of methane pressure swing adsorption separation and low-concentration methane recovery.